Early heater control valve O ring size?

[mtriple]

I know its a long shot, but after staying up very late last night, I was able to take the little sob out with no injuries or casualties. Now I need to pop it open and replace the leaky O ring. This is the all brass early style and it seems that it does have one O ring inside. Does anyone know what the size of it is before I go on a hunting adventure at home depot?

TIA

Hamada

[Chris_B]

The best approach is to take it with you and match it up. The original is likely a metric size, but you should be able to find something close enough to use at a US hardware store. I have previously found usable 0 rings (probably sized in inches) for this valve at the local Ace hardware. Home Depot should have a better selection, if anything.

[Markster]

On 10/26/2007 at 9:09 AM, mtriple said:

Does anyone know what the size of it is before I go on a hunting adventure at home depot?

I am doing my early valve now - gonna guess because the old valve oring is OLD ? - 13mm x 19mm x3mm - anyone can confirm this?  Buna?  Could be 2.7mm?  

[Dionk]

I know this is an old Thread but for the record I’m gonna try a size 206. 

[uai]

it's an x-ring, not an o-ring.

I don't have the dimensions anymore.
But I'd just get the size that seems to be correct and one larger an one  smaller.

 

[calw]

Not even knowing that X-rings existed, I was prompted by UAI to find this:

X-Ring Seals, Quad® Ring Seals & Low Friction Seals - The O-ring Store

WWW.THEORINGSTORE.COM

---

Buna-N 70 Durometer X-rings - Twice the Sealing Surface Get them online at The O-ring Store. We make getting your o-rings easy!

 

Now I have to wonder about the longevity of my rebuild which used an O ring from the hardware store out of ignorance and having only crumbled bits of rubber to go by.  I also wonder if using an X ring that fills the available space would make the valve easier to actuate than if using an O ring stuffed in the same space.  Oh well, next time.....

[uai]

I found the dimensions for the late valve in my emails, still searching for the early 
X-Ring 7,66 x 1,78 mm NBR 70° +/- 5° Shore A schwarz

O-Ring 32,0 x 1,0 mm NBR 70° +/- 5° Shore A schwarz
 

[JameyP]

On 3/13/2022 at 7:43 AM, Dionk said:

I know this is an old Thread but for the record I’m gonna try a size 206. 

@Dionk how did the 206 work out? I have an o-ring in mine from Ace Hardware. It doesn’t leak but it’s hard to operate. Looking for a better fitting one. 

Edited May 5 by JameyP

[Joesprocket]

I just bought a 10 pack of x pattern 2.5 (13ID, 18OD) on eBay. I don’t need all 10 so would be happy to drop one in the mail to ya free of charge  
 

https://www.ebay.com/vod/FetchOrderDetails?itemId=296172350263&transactionId=2171711766019&mkevt=1&mkpid=0&emsid=e11400.m144671.l152967&mkcid=7&ch=osgood&euid=2b0f4f3be6444a77a5a256ce8049a2f8&bu=43091455263&exe=0&ext=0&osub=-1%7E1&crd=20240504134214&segname=11400

[JameyP]

That would be amazing. Thanks so much! Just one more example of why I love this community….

 

16320 Walnut Ave. 

Atascadero, Ca 93422

 

 

[James Laray]

Take it out and match it up.   If it crumbles or breaks apart, use clear tape to set it together.   I wound up going to Ace Hardware and studied their variety of rubber gaskets.  I bought various sizes to make sure I had the correct fit.